问题补充：
It was yesterday I went to the railway station to meet my uncle.
A. why .
B. who
C. what
D. that
答案：
A. why .
B. who
C. what
(答案→)D. that
解析：句意：就是在昨天我五火车站去见我叔叔。这里用的是强调句，强调结构是：It is/was+强调部分+that…，判断是否是强调句的方法是：去掉强调结构，如果这句话仍然成立，就是强调句，这句话如果去掉强调结构是：I went to the railway station to meet my uncle yesterday.所以是强调句，所以选D。
